These results are the first lepton flavour violation measurements at a hadron collider.
The limits for \(\tau ^-\rightarrow \mu ^+\mu ^-\mu ^-\)  supercede those of Ref. [1]} and, in combination with results from the \(B\)  factories, improve the constraints
placed on the parameters of a broad class of NP models [2]}. The limits for \(\tau ^-\rightarrow \overline{p}\mu ^+\mu ^-\)  and \(\tau ^-\rightarrow p\mu ^-\mu ^-\)  represent the first ever constraints on these channels.
